JPH06130253A - Fixing device for optical fiber connector - Google Patents
Fixing device for optical fiber connectorInfo
- Publication number
- JPH06130253A JPH06130253A JP4282091A JP28209192A JPH06130253A JP H06130253 A JPH06130253 A JP H06130253A JP 4282091 A JP4282091 A JP 4282091A JP 28209192 A JP28209192 A JP 28209192A JP H06130253 A JPH06130253 A JP H06130253A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- fiber connector
- leaf spring
- core wire
- tension member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Mechanical Coupling Of Light Guides (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は光ファイバコネクタを光
スイッチなどの光制御装置のケースに挿入して固定する
光ファイバコネクタの固定装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical fiber connector fixing device for inserting and fixing an optical fiber connector into a case of an optical control device such as an optical switch.
【０００２】[0002]
【従来の技術】一般に光ファイバは、図４に示すように
心線１１と、この心線１１の周囲を取り囲むこの心線１
１の外周保護用のジャケット１２と、このジャケット１
２の周囲を取り囲む、例えば繊維状の材料からなるテン
ションメンバ１３と、このテンションメンバ１３の周囲
を取り囲む外装被覆１４とからなる光ファイバコード１
として用いられる。そしてこの光ファイバコードは光フ
ァイバコネクタを介して、光制御装置、例えば光スイッ
チに接続される。2. Description of the Related Art Generally, an optical fiber has a core wire 11 and a core wire 1 surrounding the core wire 11 as shown in FIG.
1. A jacket 12 for protecting the outer circumference of 1 and this jacket 1
The optical fiber cord 1 that is composed of a tension member 13 that surrounds the periphery of the tension member 2 and that is made of, for example, a fibrous material, and an exterior coating 14 that surrounds the periphery of the tension member 13.
Used as. Then, the optical fiber cord is connected to an optical control device such as an optical switch via an optical fiber connector.
【０００３】図３は従来例を示す光ファイバコネクタ構
造を用いた光スイッチの一部断面を含む側面図である。
図３において、光スイッチ３はその下方左右にそれぞれ
光ファイバコネクタ２との結合用孔３５Ｂとその上方中
央に空隙部３５Ｃを有する導光プリズム３５と、この空
隙部３５Ｃ内をアクチュエータ３１を上下方向に操作す
ることにより出入する遮光シャッタ３３とから構成さ
れ、これらはケース３６に収納されている。なお、３４
は遮光シャッタの戻しばね、３５Ａは導光プリズム３５
に必要に応じて設けられる集光レンズである。光ファイ
バコネクタ２はその上端面に光ファイバコード１の心線
１１とはめ合う貫通孔２１Ａを有する円筒状のフェルー
ル２１を備えており、光ファイバコード１の外装被覆１
４，テンションメンバ１３およびジャケット１２を剥い
で心線１１を露出し、フェルール２１の貫通孔２１Ａに
下方より挿入するとともに、前もって所定の長さ露出し
ておいたテンションメンバ１３を外装被覆１４の周囲に
折り返し、この折り返されたテンションメンバ１３の外
周がフェルール２１の下端部２１Ｂの内孔にはめ合うよ
う挿入する。また、フェルール２１の中央部の内孔には
心線１１およびジャケット１２が貫通するガイド２２が
設けられ、このガイド２２が設けられているフェルール
２１の外周に凹部２１Ｃが設けられている。そして、こ
の凹部２１Ｃあるいはフェルールの下端部２１Ｂをかし
めて光ファイバコード１をフェルール２１に固定する。
光ファイバコード１が固定されたフェルール２１、すな
わち光ファイバコネクタ２の光スイッチ３への取り付け
は、光ファイバコネクタ２をケース３６の穴部３６Ａよ
り挿入し、そのフェルール２１の先端部を光スイッチ３
の導光プリズム３５の結合用孔３５Ｂにはめ合うように
して、このフェルール２１に設けられたフランジ２１Ｄ
をケース３６の穴部３６Ａに押し込んで取り付ける。FIG. 3 is a side view including a partial cross section of an optical switch using a conventional optical fiber connector structure.
In FIG. 3, the optical switch 3 includes a light guide prism 35 having a hole 35B for coupling with the optical fiber connector 2 on the lower left and right sides thereof, and a void portion 35C at the upper center thereof, and an actuator 31 in the void portion 35C in the vertical direction. It is composed of a light-shielding shutter 33 which is moved in and out by operating the above, and these are housed in a case 36. 34
Is a return spring of the light-shielding shutter, and 35A is a light guide prism 35.
Is a condenser lens provided as necessary. The optical fiber connector 2 is provided with a cylindrical ferrule 21 having a through hole 21 </ b> A that fits into the core wire 11 of the optical fiber cord 1 on its upper end surface.
4, the tension member 13 and the jacket 12 are peeled off to expose the core wire 11, and the core wire 11 is inserted into the through hole 21A of the ferrule 21 from below, and the tension member 13 that has been exposed for a predetermined length in advance is surrounded by the outer sheath 14. Then, the tension member 13 is inserted so that the outer circumference of the folded tension member 13 fits into the inner hole of the lower end portion 21B of the ferrule 21. Further, a guide 22 through which the core wire 11 and the jacket 12 pass is provided in the inner hole of the central portion of the ferrule 21, and a recess 21C is provided on the outer periphery of the ferrule 21 in which the guide 22 is provided. Then, the optical fiber cord 1 is fixed to the ferrule 21 by caulking the concave portion 21C or the lower end portion 21B of the ferrule.
To attach the ferrule 21 to which the optical fiber cord 1 is fixed, that is, the optical fiber connector 2 to the optical switch 3, the optical fiber connector 2 is inserted through the hole 36A of the case 36, and the tip of the ferrule 21 is inserted into the optical switch 3
Flange 21D provided on the ferrule 21 so as to fit in the coupling hole 35B of the light guiding prism 35
Is pushed into the hole 36A of the case 36 to be attached.
【０００４】この光スイッチ３の動作は次の通りであ
る。一方の、例えば図３において左側の光ファイバコー
ド１を通して送られた光Ｌ1 はこの光ファイバコード１
の心線１１の端面から導光プリズム３５の集光レンズ３
５Ａを通して全反射面３５Ｄで全反射され空隙部３５Ｃ
に送られる。空隙部３５Ｃに遮光シャッタ３３がないと
きは光は空隙部３５Ｃを通過して全反射面３５Ｄで全反
射されて集光レンズ３５Ａを通して右側の光ファイバコ
ード１の心線１１の端面に送られ、この光ファイバコー
ド１を通して光Ｌ2 として戻され、例えばオンを表示す
る。また、遮光シャッタ３３が空隙部３５Ｃにあるとき
は、光はここで遮光され光Ｌ2 は戻されず、例えばオフ
を表示する。The operation of the optical switch 3 is as follows. On the other hand, for example, the light L 1 sent through the optical fiber cord 1 on the left side in FIG.
From the end face of the core wire 11 of the condenser lens 3 of the light guide prism 35
5A is totally reflected by the total reflection surface 35D and is a void portion 35C.
Sent to. When the light-shielding shutter 33 is not provided in the void portion 35C, light passes through the void portion 35C, is totally reflected by the total reflection surface 35D, and is sent to the end face of the core wire 11 of the right optical fiber cord 1 through the condenser lens 35A. The light L 2 is returned through the optical fiber cord 1 and indicates, for example, ON. Further, when the light-shielding shutter 33 is in the space 35C, the light is shielded here and the light L 2 is not returned, and, for example, OFF is displayed.
【０００５】[0005]
【発明が解決しようとする課題】前述の光ファイバコネ
クタ構造においては、フェルールの中央部に設けられた
凹部あるいはその下端部をかしめることで光ファイバコ
ードを固定するようにしているが、例えば凹部をかしめ
るとその力はジャケットを介して心線に加えられるの
で、心線が析損しやすい。また、下端部をかしめるとそ
の力は２重のテンションメンバ，外装被覆およびジャケ
ットを介して心線に加えられるので心線は安全である
が、外装被覆とジャケット間に空間があるためにかしめ
の効果が少なく充分固定できない。このため、このフェ
ルールの下端部と光ファイバコードとの間に接着剤を塗
布して固定しているのが実情であり、光ファイバコード
の取り付けの作業性が非常に悪い問題がある。In the above-mentioned optical fiber connector structure, the optical fiber cord is fixed by caulking the concave portion provided in the central portion of the ferrule or the lower end portion thereof. When caulking, the force is applied to the core wire through the jacket, so the core wire is prone to eruption. Also, when the lower end is caulked, the force is applied to the core wire through the double tension member, the outer cover and the jacket, so the core wire is safe, but since there is a space between the outer cover and the jacket, it is caulked. There is little effect of and cannot be fixed enough. Therefore, in reality, an adhesive is applied and fixed between the lower end of the ferrule and the optical fiber cord, which poses a problem that the workability of attaching the optical fiber cord is very poor.
【０００６】また、光ファイバコネクタを光制御装置、
例えば光スイッチに取り付けるとき、光ファイバコネタ
クのフェルールの先端部を光スイッチの導光プリズムの
結合用孔にはめ合わせ、フェルールに設けられたフラン
ジ（図３で２１Ｄで示す）をケースの穴部（図３で３６
Ａで示す）に押し込んで取り付けるようにしている。こ
のため、これらフランジの外径と穴部の内径が軽圧入に
なるようにそれらの寸法精度を高める必要があり、また
取り付けは治具を用いるなどして正しく挿入する必要が
あり、工数を要していた。Further, the optical fiber connector is used as an optical control device,
For example, when attaching to the optical switch, the tip of the ferrule of the optical fiber connector is fitted into the coupling hole of the light guide prism of the optical switch, and the flange (21D in FIG. 3) provided on the ferrule is attached to the hole of the case. (36 in FIG.
It is attached by pushing it in (shown by A). For this reason, it is necessary to increase the dimensional accuracy of the outer diameter of these flanges and the inner diameter of the holes so that they are lightly press-fitted.In addition, it is necessary to insert them correctly by using a jig, etc. Was.
【０００７】本発明の目的は光ファイバコネクタのフェ
ルールと光ファイバコードとの結合を強固にし、例えば
接着剤の塗布などを不要にするとともに光ファイバコネ
クタを光制御装置に簡単にしかも確実に取り付けられる
ようにすることにある。It is an object of the present invention to strengthen the coupling between the ferrule of the optical fiber connector and the optical fiber cord, to eliminate the need for applying adhesive, for example, and to attach the optical fiber connector to the optical control device easily and surely. To do so.
【０００８】[0008]
【課題を解決するための手段】前述の目的を達成するた
めに、本発明は心線と、この心線の周囲を取り囲むこの
心線の外周保護用のジャケットと、このジャケットの周
囲を取り囲むテンションメンバと、このテンションメン
バの周囲を取り囲む外装被覆とからなる光ファイバコー
ドの光ファイバコネクタ構造であって、その上端面に光
ファイバコードの心線とはめ合う貫通孔を有する筒状を
なし、光ファイバコードの露出された先端部の心線がこ
の貫通孔に下方から挿入されるフェルールと、ジャケッ
トとテンションメンバとの間に挿入された内筒と、所定
の長さ露出されたテンションメンバが外装被覆の周囲に
折り返されてなる外周にはめ合い、かつ前記フェルール
の下部に結合された外筒とからなり、この外筒をかしめ
ることにより内筒を介して光ファイバコードを固定した
光ファイバコネクタと、前記光ファイバコネクタを光制
御装置のケースの穴部に固定する、板ばねからなり、そ
の両端が光制御装置のケースの両側面に沿って上方に延
長され更に外方向に折り返された両端板を備え、これら
両端板にはそれぞれ一方の嵌合部が設けられた固定具と
からなり、前記光制御装置のケースには前記両端板をそ
れぞれ上方向に案内する案内溝と、これら案内溝の下部
には前記両端板をそれぞれ内側方向に前記案内溝の中に
湾曲させる傾斜面と、前記両端板の一方の嵌合部が内側
からはめ合う他方の嵌合部とをそれぞれ設けるようにす
る。またこの固定具は板ばねからなり、この板ばねの外
筒に対面する個所にこの板ばねにスリットを付して上方
向の可撓性の爪を形成するようにする、あるいはこの固
定具は板ばねからなり、その両端間に直角方向に折り曲
げられた側板を備え、この板ばねの外筒に対面する個所
にこの板ばねにスリットを付して前記側板に沿った上方
向の可撓性の爪を形成するようにする。更にこれら固定
具に設けられた可撓性の爪が所定の撓み量を越えると外
筒の下端がこの固定具に接触するよう構成する。In order to achieve the above-mentioned object, the present invention provides a core wire, a jacket surrounding the circumference of the core wire for protecting the outer circumference of the core wire, and a tension surrounding the circumference of the jacket. An optical fiber connector optical fiber connector structure comprising a member and an outer coating that surrounds the tension member, and has a cylindrical shape having a through hole at its upper end face to be fitted with the core wire of the optical fiber cord. The ferrule in which the core wire of the exposed tip of the fiber cord is inserted into this through hole from below, the inner cylinder inserted between the jacket and the tension member, and the tension member exposed for a predetermined length is the exterior. It consists of an outer cylinder that fits on the outer circumference that is folded back around the sheath and that is joined to the lower part of the ferrule, and by caulking this outer cylinder, the inner cylinder An optical fiber connector having an optical fiber cord fixed therethrough, and a leaf spring for fixing the optical fiber connector to the hole of the case of the optical control device, both ends of which are upward along both side surfaces of the case of the optical control device. End plates which are extended to the outside and are folded back outward, and each end plate is provided with a fixture provided with one fitting part, and each end plate is mounted on the case of the light control device. Guide grooves for guiding in the direction, inclined surfaces for bending the both end plates inward in the guide grooves in the lower part of these guide grooves, and the other of the fitting portions of the both end plates fitted from the inside. And the mating part of are respectively provided. Also, this fixing device is composed of a leaf spring, and a slit is formed in this leaf spring at a position facing the outer cylinder of this leaf spring to form an upwardly flexible claw, or this fixing device is It is composed of a leaf spring, and is provided with side plates bent at right angles between both ends thereof, and a slit is attached to the leaf spring at a position facing the outer cylinder of the leaf spring to provide upward flexibility along the side plate. To form the nail. Further, when the flexible claws provided on these fixtures exceed a predetermined bending amount, the lower end of the outer cylinder contacts the fixtures.
【０００９】[0009]
【作用】本発明の光ファイバコネクタの固定装置におい
ては、光ファイバコードのジャケットとテンションメン
バの間に内筒を挿入し、所定の長さ露出されたテンショ
ンメンバが外装被覆の周囲に折り返されてなる外周には
め合い、かつフェルールに結合された外筒とからなり、
この外筒をかしめるようにしたので、外筒に加えられた
力は内筒で受けるので、光ファイバに応力を与えること
なく強くかしめることができる。これによりフェルール
に光ファイバコードを強固に固定できる。In the optical fiber connector fixing device of the present invention, the inner cylinder is inserted between the jacket of the optical fiber cord and the tension member, and the tension member exposed by a predetermined length is folded back around the outer covering. Consists of an outer cylinder fitted to the outer periphery and joined to the ferrule,
Since the outer cylinder is crimped, the force applied to the outer cylinder is received by the inner cylinder, so that the optical fiber can be strongly crimped without giving stress. As a result, the optical fiber cord can be firmly fixed to the ferrule.
【００１０】そして、光制御装置の結合用孔にフェルー
ルの先端部をはめ合わせて挿入し、この光制御装置のケ
ースにはめ合わせにより固定される固定具に設けた可撓
性の爪により、光ファイバコネクタの下端部を押し上げ
て光制御装置に取り付けるようにする。この固定具は板
ばねからなり、その両端が光制御装置のケースの両側面
に沿って上方に延長され更に外方向に折り返された両端
板を備え、これら両端板にはそれぞれ一方の嵌合部が設
けられ、前記光制御装置のケースには前記両端板をそれ
ぞれ上方向に案内する案内溝と、これら案内溝の下部に
は前記両端板をそれぞれ内側方向に前記案内溝の中に湾
曲させる傾斜面と、前記両端板の一方の嵌合部が内側か
らはめ合う他方の嵌合部とをそれぞれ設けるようにした
ので、特別な治具を必要とせずワンタッチで取り付けが
可能になる。この固定具は板ばねからなり、この板ばね
の外筒に対面する個所にこの板ばねにスリットを付して
上方向の可撓性の爪を形成したので、この可撓性の爪で
光ファイバコネクタに一定の押圧が加わり確実に取り付
けることができる。更にこの固定具は板ばねからなり、
その両端間に直角方向に折り曲げられた側板を備え、こ
の板ばねの外筒に対面する個所にこの板ばねにスリット
を付して前記側板に沿った上方向の可撓性の爪を形成し
たので、この側板により固定具の撓みに対する強度が増
加し、この側板に沿って長い爪の形成が可能となって爪
の撓み量が増大し、より一定の押圧が加わるようにな
り、一層確実に取り付けることができる。更にまた、こ
の固定具に設けられた可撓性の爪が所定の撓み量を越え
ると外筒の下端がこの固定具に接触するよう構成したの
で、光ファイバコードの配線時などで固定具に不用意な
引抜力が加わったとき、光ファイバコネクタの外筒の下
端は固定具で押さえられるので、光ファイバコネクタの
取り付けの確実性がより高められる。Then, the tip of the ferrule is inserted into the coupling hole of the light control device by inserting the ferrule, and a flexible claw provided on a fixture fixed by fitting the ferrule to the case of the light control device Push the lower end of the fiber connector up to attach it to the light control device. This fixture is composed of leaf springs, and both ends thereof are provided with both end plates extended upward along both side surfaces of the case of the light control device and further folded outward, and these end plates are provided with one fitting portion respectively. Guide grooves for guiding the both end plates upward respectively are provided in the case of the light control device, and inclinations for curving the both end plates inward in the guide grooves are provided at lower portions of the guide grooves. Since the surface and the other fitting portion where one fitting portion of the both end plates fits from the inside are respectively provided, it is possible to attach with one touch without requiring a special jig. This fixture is composed of a leaf spring, and the leaf spring is provided with a slit at a position facing the outer cylinder of the leaf spring to form a flexible claw in the upward direction. A certain amount of pressure is applied to the fiber connector so that it can be securely attached. Furthermore, this fixture consists of leaf springs,
A side plate bent at a right angle was provided between both ends of the plate spring, and a slit was attached to the plate spring at a position facing the outer cylinder of the plate spring to form an upward flexible claw along the side plate. Therefore, this side plate increases the strength against bending of the fixing tool, and it becomes possible to form a long claw along the side plate, the amount of bending of the claw increases, more constant pressing force is applied, and more securely. Can be installed. Furthermore, since the lower end of the outer cylinder comes into contact with this fixing tool when the flexible claw provided on this fixing tool exceeds a predetermined bending amount, the fixing tool can be used when the optical fiber cord is wired. When the careless pulling force is applied, the lower end of the outer cylinder of the optical fiber connector is pressed by the fixing tool, so that the reliability of the attachment of the optical fiber connector is further enhanced.
【００１１】[0011]
【実施例】図１（ａ）は本発明の光ファイバコネクタの
固定装置を用いた光スイッチの一部断面を含む側面図、
図１（ｂ）は図１（ａ）の要部正面図であり、図２
（ａ）は図１の固定具３７の側面図、図２（ｂ）は図２
（ａ）の下面図、図２（ｃ）は図２（ａ）の正面図であ
る。なお図３の従来例と同一部材には同一符号を付けて
説明を省略する。図１に示す光ファイバコネクタ２はそ
の上端面に光ファイバコード１の心線１１とはめ合う貫
通孔２１Ａを有する円筒状のフェルール２１を備えてお
り、光ファイバコード１の外装被覆１４，テンションメ
ンバ１３およびジャケット１２を剥いで心線１１を露出
し、前もって所定の長さ露出しておいたテンションメン
バ１３を外装被覆１４の周囲に折り返し、この折り返さ
れたテンションメンバ１３の外周に外筒２５を該外筒２
５の内孔にはめ合うよう挿入する。そしてジャケット１
２とテンションメンバ１３との間に内筒２４を挿入し、
フェルール２１の貫通孔２１Ａに光ファイバコード１の
心線１１を通して、外筒２５の上側のツメ部２５Ｂを内
方に曲げてフェルール２１と外筒２５とを固定する。そ
して、外筒２５をかしめ、この外筒２５と内筒２４との
間で光ファイバコード１を固定する。このとき、外筒２
５に加えられた力は内筒２４で受けるので、心線１１に
応力を与えることなく強くかしめることができる。これ
によりフェルール２１に光ファイバコード１を強固に固
定できる。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1A is a side view including a partial cross section of an optical switch using an optical fiber connector fixing device of the present invention,
FIG. 1B is a front view of the main part of FIG.
2A is a side view of the fixture 37 of FIG. 1, and FIG.
2A is a bottom view and FIG. 2C is a front view of FIG. 2A. The same members as those in the conventional example shown in FIG. The optical fiber connector 2 shown in FIG. 1 is provided with a cylindrical ferrule 21 having a through hole 21A that fits into the core wire 11 of the optical fiber cord 1 on its upper end surface. 13 and the jacket 12 are peeled off to expose the core wire 11, and the tension member 13 that has been exposed for a predetermined length in advance is folded back around the outer covering 14, and the outer cylinder 25 is provided on the outer periphery of the folded tension member 13. The outer cylinder 2
Insert it so that it fits into the inner hole of 5. And jacket 1
Insert the inner cylinder 24 between the 2 and the tension member 13,
The core wire 11 of the optical fiber cord 1 is passed through the through hole 21A of the ferrule 21, and the upper claw portion 25B of the outer cylinder 25 is bent inward to fix the ferrule 21 and the outer cylinder 25. Then, the outer cylinder 25 is caulked, and the optical fiber cord 1 is fixed between the outer cylinder 25 and the inner cylinder 24. At this time, the outer cylinder 2
Since the force applied to 5 is received by the inner cylinder 24, it is possible to strongly crimp without applying stress to the core wire 11. Thereby, the optical fiber cord 1 can be firmly fixed to the ferrule 21.
【００１２】なお、光スイッチ３の動作は図３の従来例
と同様である。固定具３７は、その両端が光スイッチ３
のケース３６の両側面に沿って上方向に延長され、更に
外方向に折り返された部分３７Ｄを有する両端板３７Ｃ
を備え、これら両端板３７Ｃにはそれぞれ凸状の一方の
嵌合部３７Ａが設けられている。また、光スイッチ３の
ケース３６の両側面にはそれぞれ両端板３７Ｃを上方向
に案内する案内溝３６Ｃと、これら案内溝３６Ｃの下部
には両端板３７Ｃをそれぞれ内側方向に案内溝３６Ｃの
中に湾曲させる傾斜面３６Ｄと、両端板３７Ｃの一方の
嵌合部３７Ａが内側からはめ合わされる凹状の他方の嵌
合部３６Ｂとがそれぞれ設けられている。更に固定具３
７はその両端間に直角方向に折り曲げられた側板３７Ｅ
を備え、この側板３７Ｅに沿って両端部から可撓性の爪
３７Ｂが設けられている。The operation of the optical switch 3 is similar to that of the conventional example shown in FIG. Both ends of the fixture 37 are the optical switches 3
Both end plates 37C extending upward along both side surfaces of the case 36 and further having outwardly folded back portions 37D
Each of the end plates 37C is provided with a convex one fitting portion 37A. Further, guide grooves 36C for guiding the both end plates 37C upward are provided on both side surfaces of the case 36 of the optical switch 3, and both end plates 37C are provided inwardly in the guide grooves 36C below the guide grooves 36C. The inclined surface 36D to be curved and the other concave fitting portion 36B into which the one fitting portion 37A of the both end plates 37C are fitted from the inside are respectively provided. Fixture 3
7 is a side plate 37E bent at right angles between its both ends
And flexible claws 37B are provided from both ends along the side plate 37E.
【００１３】このような構成において、光ファイバコネ
クタ２のフェルール２１の先端部を光スイッチ３の導光
プリズム３５の結合用孔３５Ｂにはめ合わせて挿入し、
固定具３７を光スイッチ３のケース３６の下方から押し
上げると、両端板３７Ｃは傾斜面３６Ｄによって内側方
向に案内溝３６Ｃ内に湾曲してこの案内溝３６Ｃ内を上
方に移動し、押し上げ完了とともに両端板３７Ｃはそれ
ぞれ傾斜面３６Ｄからはずれ、その湾曲は外側方向に回
復して、両端板３７Ｃの一方の嵌合部３７Ａは光スイッ
チ３のケース３６の他方の嵌合部３６Ｂに内側からはめ
合わされて固定される。そしてこの固定具３７に設けら
れた可撓性の爪３７Ｂにより、光ファイバコネクタ２は
その外筒２５の下端部が押し上げられて光スイッチ３に
取り付けられる。ここで図２に示すように、固定具３７
はその両端間に直角方向に折り曲げられた側板３７Ｅを
備え、この側板３７Ｅに沿って両端部から可撓性の爪３
７Ｂを設けるようにしたので、この側板３７Ｅによって
固定具３７の撓みに対する強度が増加し、この側板３７
Ｅに沿った長い爪を設けることが可能となる。これによ
り、この爪３７Ｂの可撓性は高められるので光ファイバ
コネクタ２に加わる押圧がより一定化されて確実に取り
付けられ、光ファイバコネクタ２の心線１１と導光プリ
ズム３５の集光レンズ３５Ａとの間隔をより容易に一定
に保つことができる。In such a structure, the tip of the ferrule 21 of the optical fiber connector 2 is fitted into the coupling hole 35B of the light guide prism 35 of the optical switch 3, and is inserted.
When the fixture 37 is pushed up from below the case 36 of the optical switch 3, the end plates 37C are curved inward by the inclined surface 36D into the guide groove 36C and move upward in the guide groove 36C. The plates 37C are respectively separated from the inclined surfaces 36D, the curvature is restored in the outward direction, and one fitting portion 37A of both end plates 37C is fitted to the other fitting portion 36B of the case 36 of the optical switch 3 from the inside. Fixed. The optical fiber connector 2 is attached to the optical switch 3 by pushing up the lower end portion of the outer tube 25 of the optical fiber connector 2 by the flexible claw 37B provided on the fixture 37. Here, as shown in FIG.
Is provided with side plates 37E bent at right angles between both ends thereof, and flexible claws 3 are provided from both ends along the side plates 37E.
7B is provided, the side plate 37E increases the strength of the fixture 37 against bending, and the side plate 37E
It becomes possible to provide long claws along E. As a result, the flexibility of the claw 37B is increased, so that the pressure applied to the optical fiber connector 2 is more uniform and is securely attached, and the core wire 11 of the optical fiber connector 2 and the condenser lens 35A of the light guide prism 35 are provided. The distance between and can be more easily kept constant.
【００１４】次に光ファイバコネクタ２を取り外すとき
は、両端板３７Ｃの外方向に折り返された部分３７Ｄを
内側に押圧すると両端板３７Ｃの一方の嵌合部３７Ａと
光スイッチ３のケース３６の他方の嵌合部３６Ｂとのは
め合わせが外れるので、固定具３７を引き下げて取り外
し、光ファイバコネクタ２を結合用孔３５Ｂから引き抜
くようにする。Next, when the optical fiber connector 2 is detached, if the outwardly folded back portion 37D of the both end plates 37C is pressed inward, one fitting portion 37A of the both end plates 37C and the other side of the case 36 of the optical switch 3 are pressed. Since the fitting with the fitting portion 36B of 1 is released, the fixture 37 is pulled down and removed, and the optical fiber connector 2 is pulled out from the coupling hole 35B.
【００１５】また、図１において矢印Ｒで示されるよう
に、可撓性の爪３７Ｂが撓み、所定の撓み量を越えると
きは光ファイバコネクタ２の外筒２５の下端が固定具３
７に接触するように構成されている。これによって光フ
ァイバコードの配線時などで固定具３７に不用意な引抜
力が加わったとき、光ファイバコネクタ２は固定具３７
で押さえられるので、光ファイバコネクタ２の取り付け
の確実性がより高められる。Further, as shown by an arrow R in FIG. 1, when the flexible claw 37B bends and exceeds a predetermined bending amount, the lower end of the outer tube 25 of the optical fiber connector 2 is fixed to the fixture 3.
7 is configured to contact. As a result, when an inadvertent pulling force is applied to the fixture 37 such as when the optical fiber cord is wired, the optical fiber connector 2 is fixed to the fixture 37.
Since it is held down by, the certainty of the attachment of the optical fiber connector 2 is further enhanced.
【００１６】[0016]
【発明の効果】本発明の光ファイバコネクタの固定装置
においては、光ファイバコードのジャケットとテンショ
ンメンバの間に内筒を挿入し、所定の長さ露出されたテ
ンションメンバが、外装被覆の周囲に折り返されてなる
外周に外筒を挿入したことにより、フェルールに結合さ
れた外筒をかしめたとき、心線に応力を与えることなく
強くかしめることができ、例えば接着剤の塗布などが不
要となる。また、光ファイバコネクタは光制御装置のケ
ースにはめ合わせにより固定される固定具に設けられた
可撓性の爪で押圧されることにより、光制御装置にワン
タッチで確実に取り付けることができる。更にまた、配
線時などで光ファイバコネクタに不用意な引抜力が加わ
ったときはこの固定具で光ファイバコネクタが押さえら
れるので光ファイバコードの取り付けの確実性が一層向
上する。In the optical fiber connector fixing device of the present invention, the inner tube is inserted between the jacket of the optical fiber cord and the tension member, and the tension member exposed by a predetermined length is provided around the outer covering. By inserting the outer cylinder into the folded outer circumference, when crimping the outer cylinder connected to the ferrule, it is possible to strongly crimp without applying stress to the core wire, for example, application of adhesive is unnecessary. Become. Further, the optical fiber connector can be securely attached to the optical control device with one touch by being pressed by the flexible claw provided on the fixture fixed by fitting in the case of the optical control device. Furthermore, when an inadvertent pulling force is applied to the optical fiber connector at the time of wiring or the like, the fixing of the optical fiber connector is held by this fixture, so that the reliability of the attachment of the optical fiber cord is further improved.
【図１】本発明の光ファイバコネクタの固定装置を用い
た光スイッチを示し（ａ）は一部断面を含む要部側面
図、（ｂ）は要部正面図1A and 1B show an optical switch using an optical fiber connector fixing device of the present invention, FIG. 1A is a side view of a main part including a partial cross section, and FIG. 1B is a front view of the main part.
【図２】図１の固定具を示し（ａ）は側面図、（ｂ）は
下面図、（ｃ）は正面図2 (a) is a side view, FIG. 2 (b) is a bottom view, and FIG. 2 (c) is a front view.
【図３】従来の光ファイバコネクタ構造を用いた光スイ
ッチの一部断面を含む側面図FIG. 3 is a side view including a partial cross section of an optical switch using a conventional optical fiber connector structure.
【図４】光ファイバコードの構造を示す側面図FIG. 4 is a side view showing the structure of the optical fiber cord.
１ 光ファイバコード １１ 心線 １２ ジャケット １３ テンションメンバ １４ 外装被覆 ２ 光ファイバコネクタ ２１ フェルール ２１Ａ 貫通孔 ２４ 内筒 ２５ 外筒 ３ 光スイッチ（光制御装置） ３５Ｂ 結合用孔 ３６ ケース ３６Ｂ 他方の嵌合部 ３６Ｃ 案内溝 ３６Ｄ 傾斜面 ３７ 固定具 ３７Ａ 一方の嵌合部 ３７Ｂ 爪 ３７Ｃ 端板 ３７Ｅ 側板 1 Optical Fiber Cord 11 Core Wire 12 Jacket 13 Tension Member 14 Exterior Coating 2 Optical Fiber Connector 21 Ferrule 21A Through Hole 24 Inner Cylinder 25 Outer Cylinder 3 Optical Switch (Optical Control Device) 35B Coupling Hole 36 Case 36B Other Fitting Part 36C Guide groove 36D Inclined surface 37 Fixture 37A One fitting part 37B Claw 37C End plate 37E Side plate
Claims (4)
線の外周保護用のジャケットと、このジャケットの周囲
を取り囲むテンションメンバと、このテンションメンバ
の周囲を取り囲む外装被覆とからなる光ファイバコード
の上端面に光ファイバコードの心線とはめ合う貫通孔を
有する筒状をなし、光ファイバコードの露出された先端
部の心線がこの貫通孔に下方から挿入されるフェルール
と、ジャケットとテンションメンバとの間に挿入された
内筒と、所定の長さ露出されたテンションメンバが外装
被覆の周囲に折り返されてなる外周にはめ合い、かつ前
記フェルールの下部に結合された外筒とからなり、この
外筒をかしめることにより内筒を介して光ファイバコー
ドを固定した光ファイバコネクタと、前記光ファイバコ
ネクタを光制御装置のケースの穴部に固定する、板ばね
からなり、その両端が光制御装置のケースの両側面に沿
って上方に延長され更に外方向に折り返された両端板を
備え、これら両端板にはそれぞれ一方の嵌合部が設けら
れた固定具とからなり、前記光制御装置のケースには前
記両端板をそれぞれ上方向に案内する案内溝と、これら
案内溝の下部には前記両端板をそれぞれ内側方向に前記
案内溝の中に湾曲させる傾斜面と、前記両端板の一方の
嵌合部が内側からはめ合う他方の嵌合部とがそれぞれ設
けられていることを特徴とする光ファイバコネクタの固
定装置。1. A light comprising a core wire, a jacket surrounding the circumference of the core wire for protecting the outer circumference of the core wire, a tension member surrounding the circumference of the jacket, and an exterior coating surrounding the circumference of the tension member. The upper end surface of the fiber cord has a cylindrical shape having a through hole that fits with the core wire of the optical fiber cord, and the core wire of the exposed tip of the optical fiber cord is inserted into the through hole from below, and a jacket. An inner cylinder inserted between the tension member and the tension member, and an outer cylinder fitted to the outer periphery formed by folding a tension member exposed by a predetermined length around the outer sheath and coupled to the lower portion of the ferrule. The optical fiber connector comprises an optical fiber connector in which the optical fiber cord is fixed through the inner tube by crimping the outer tube, and the optical fiber connector is provided with an optical control device. It consists of a leaf spring that is fixed in the hole of the case of, and both ends of which are extended upward along both side surfaces of the case of the light control device and further folded outward, and these end plates are respectively The light control device has a fixing member provided with one fitting portion, and a guide groove for guiding the both end plates upward in the case of the light control device, and the both end plates inside the guide grooves. Fixing an optical fiber connector, each of which is provided with an inclined surface that is curved in the guide groove in a predetermined direction and the other fitting portion that one fitting portion of the both end plates fits from the inside. apparatus.
定装置において、固定具は板ばねからなり、この板ばね
の外筒に対面する個所にこの板ばねにスリットを付して
上方向の可撓性の爪を形成したことを特徴とする光ファ
イバコネクタの固定装置。2. The fixing device for an optical fiber connector according to claim 1, wherein the fixing member comprises a leaf spring, and the leaf spring is provided with a slit at a position facing the outer cylinder of the leaf spring so as to move upward. A fixing device for an optical fiber connector, characterized in that a flexible claw is formed.
定装置において、固定具は板ばねからなり、その両端間
に直角方向に折り曲げられた側板を備え、この板ばねの
外筒に対面する個所にこの板ばねにスリットを付して前
記側板に沿った上方向の可撓性の爪を形成したことを特
徴とする光ファイバコネクタの固定装置。3. A fixing device for an optical fiber connector according to claim 1, wherein the fixing member is composed of a leaf spring, and is provided with side plates bent at right angles between both ends of the fixing member, and faces the outer cylinder of the leaf spring. A fixing device for an optical fiber connector, characterized in that a slit is formed in this leaf spring at a position to form an upward flexible claw along the side plate.
タの固定装置において、固定具に設けられた可撓性の爪
が所定の撓み量を越えると外筒の下端がこの固定具に接
触するよう構成されていることを特徴とする光ファイバ
コネクタの固定装置。4. The fixing device for an optical fiber connector according to claim 2 or 3, wherein the lower end of the outer cylinder comes into contact with the fixture when the flexible claw provided on the fixture exceeds a predetermined bending amount. A device for fixing an optical fiber connector, which is configured as described above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4282091A JPH06130253A (en) | 1992-10-21 | 1992-10-21 | Fixing device for optical fiber connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4282091A JPH06130253A (en) | 1992-10-21 | 1992-10-21 | Fixing device for optical fiber connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06130253A true JPH06130253A (en) | 1994-05-13 |
Family
ID=17648009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4282091A Pending JPH06130253A (en) | 1992-10-21 | 1992-10-21 | Fixing device for optical fiber connector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06130253A (en) |
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